james was a repairman before and he ( )a store owner for five years since he set up his own fruit sh

james was a repairman before and he ( )a store owner for five years since he set up his own fruit sh

题目
james was a repairman before and he ( )a store owner for five years since he set up his own fruit shop.
A is B was C has been D had been
答案
C
since在句中的话 一般都会用完成时态.
从句意来理解的话.
James以前是个修理工.自从他开了自己的水果店以来,他现在当老板五年了.
现在完成时的意思是动作从过去一直持续到现在,将来可能还在继续.
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